Pump.



Patented May 6, |902` A. s. CARDELLA.

' PUM P.

(Application filed Max'. 20, 1901,)

(No Model.)

a IIL@ A me mams PETER: co. Fumo-umol. wAswNaToN. n. c.

UNirn Srnrns ATENT OFFICE.

ALEXANDER S. CARDELLA, OF KINMUNDY, ILLINOIS, ASSIGNOR OF ONE HALF TOIVESLEY PARRO'IT LEASOR, OF KALAMAZOO, MICHIGAN.

SPECIFICATION forming part of Letters Patent No. 699,448, dated May 6,1902. Application iiled March 26, 1901. lSerial No. 52,901. (No model.)

T0 @ZZ whom, it party concern:

Be it known that I, ALEXANDER S. CAR- DELLA, a citizen of the UnitedStates of America, residing at Kinmundy, in the county of Marion andState of Illinois, have invented To such end the invention consists in0er-,

tain novel characteristics, which. will be described and claimed below.

The drawing illustrates the invention by means of an elevation partly inaxial section.

Referring to the drawing, A is a cylinder having at the lower end areduced extension a and at the upper end a reduced extension a. In thelower end of the extension a is a perforated plug d2, in the perforationof which is secured a sectional suction-pipe B, containing a series ofcheek-valves b, arranged at various points and terminating in afootpiece b. In the top of the extension a is a perforated plug as,provided with a stuffing-box a", in which is guided a pipe C, the lowerend of which is secured to the differential piston D, the smaller upperportion of which, cl, works in the reduced extension ct and the lowerlarger portion of which, d', works in the larger cylinder A. The pistonis perforated longitudinally and contains a checkvalve cl2. Below thepiston D is a spring-ac tuated piston E, perforated to register with theperforation in the piston D and containing a check-valve e. Acoiledspring F, under tension between the piston E and the plug a2, tends topress the piston E upward. On the pipe C is a collar c, to which issecured a lever c', provided with a handle o2 and pivoted to the upperends of two links c3 c4, the lower ends of which are pivoted to abracket c5, which is a part of the plug d3. The handle provides meansfor reciprocating the differential piston and operating the pump, aswill be hereinafter described. On the upper end of the pipe C is astop-cock G,. and a iiexible pipe g is secured to said stopcock andterminated at some desired point of delivery. A branch pipe I, openinglaterally from the section-pipe B, above the upper check-valve therein,is connected, by means of an elbow J, with an upright pipe K, containinga check-valve It, closing downward. The pipe K leads to a point ofdelivery at a higher level than that of the pipe g. In the upper portionof the upper extension a of the cylinder A is a branch pipe M,connected, by an elbow m, with a Vertical pipe N, extending-downward andconnecting, by means of a horizontal pipe O, with the suction-pipe,preferably below the lower check-valve. The branch pipe M is arrangedabove the highest Vposition of the smaller end of the differentialpiston, and the elbow m contains an inlet check-valve fm', opening intothe cylinder and an upwardly-olosing check-valve m2 in the upper end ofthe vertical pipe.

In the operation of the pump as above described the oscillation of thepiston evidently will pump water either through the pipe K or the tubet, depending upon the elevation of the delivery ends of said pipes, andif, as stated, the pipe K leads to a higher level the Vwater will bedelivered through the tube g when it is open and through the pipe K whenthe other out-let is closed by means of the stop-cock G. It is alsoapparent that the upper smaller end of the differential piston will drawin air through the inlet check-valve 'm' yduring the downward stroke andon the return stroke will force the air down thrpugh the check-valve m2,eventually discharging it into the water below the lower of thecheckvalves Z). The amount of air thus discharged is not sufficient tosatisfy the suction of the pump, because of the difference in the twoendsof the differential piston; but it mingles with the water andreduces the specific gravity of the latter sufiiciently to'make itpossible to lift the water by suction to a greater hfeight than ispossible without the mixture o air.

It will be seen that there is no positive connection between thedifferential piston and IOO the spring-actuated piston, and this factgives the apparatus a certain ease of movement in case of a quick jerk.When the pistons have reached their lower limit and start to return, thedifferential piston is able to leave the spring-actuated pistontemporarily and pu mp air down into the column of water before thelatter need necessarily start upward.

I do not limit myself to the specific devices here shown, in View of thefact that great variation is possible as to their exact details ofconstruction.

I claim as ne1 and desire to secure by Letters Patent l. In a pump, thecombination with a suitable cylinder, of a piston therein provided withsuitable connections for its reciprocation and a spring-actuated pistoncontiguous to the first piston and provided with a spring tending topress it against said irst piston Whereby'said spring-actuated piston ismoved positively in one direction by the first piston and is moved inthe opposite direction by the spring; substantially as described.

2. In a pump, the combination with a suction-pipe containing a series ofcheck-valves opening upward, of a branch pipe connected therewith abovethe upper check-valve, said branch pipe also containing a check-valveopening upward, a cylinder connected with said suction-pipe above thebranch pipe, an upwardly-pressing spring in said cylinder, aspring-actuated piston pressed upward by said spring and containing aperforation provided with an upwardly-opening check-valve, apositively-driven piston above the springaetuated piston, alsoperforated, containing a check-valve, and suitable connections forpositively reciprocating said second piston; substantially as described.

In witness whereof I have hereunto set my hand, at Chicago, in thecounty of Cook and State of Illinois, this th day of March, A. D. 1901.

ALEXANDER S. CARDELLA. lVitnesses:

CHAs. O. SHERVEY, S. BLIss.

